Short answer: a tie on sound quality. Both are rated 4.1/5 (#380 and #350 of 1291 in-ear headphones) at nearly the same price ($111.46 vs $109), so choose on features and fit.
The case for the QoA Bijou: A broadly balanced tuning with a preference score of 74 against the Harman target. The catch: The rating reflects sound quality only; comfort, build and noise isolation are not part of the score.
The case for the Tin HiFi P1 Max II: A planar IEM that measures well across fourteen measurements (score 75), with bass on target down to 20 Hz. The catch: At 98 dB sensitivity it needs more power than most IEMs, so a dongle DAC helps, and treble sits about 3.1 dB below target.
Buy the QoA Bijou or the Tin HiFi P1 Max II on features: they are rated the same for sound quality at close to the same price.
Want more options? Browse the full Headphones rankings.
A broadly balanced tuning with a preference score of 74 against the Harman target.
Amazon $111.46 eBay
A planar IEM that measures well across fourteen measurements (score 75), with bass on target down to 20 Hz.
Amazon $109.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| QoA Bijou | Tin HiFi P1 Max II | |
|---|---|---|
| Price | $111.46 | $109.00 |
| Ranked | #380 of 1291 in In-Ear Headphones | #350 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 74 (median of 9 squig.link measurements, calibrated to AutoEQ) | 75 (median of 14 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.69 dB standard deviation | 1.92 dB standard deviation |
| Tonal Tilt | -0.52 (negative is warmer, positive brighter) | -0.28 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.5 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Planar magnetic |
| Drivers | 1 x dynamic, 2 x balanced armature | 1 x 14.2mm planar |
| Impedance | - | 16 ohms |
| Sensitivity | - | 98 dB at 1 kHz |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the QoA Bijou from aftersound, audioamigo, bassaudio, boizoff, faxepremium, jaytiss, practiphile, soundcheck39 and tonedeafmonk; the Tin HiFi P1 Max II from arn, audioamigo, csi-zone, dl, hobbytalk, hu-fi, jaytiss, kuping-sensi, mmagtech, pw, samreviews, soundcheck39, soundignity and vortexreviews, all via squig.link.
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